Yep, I owned a Well Tempered and with a stretchy rubber belt you'll get audible wow. Since Stanalog is no longer in existence, Origin Live is your best, maybe your only option. I've corresponded with people who claim to have gotten mylar/kapton or silk threads to work with the Well Tempered, but I can't imagine how they did it. The tolerances would have been beyond my capabilities for sure.
Great table if you can live with the fussiness!